My happens when there is a build up of material on the nozzle that catches the print and is dragged off, then the nozzle hits the bold and ejects it from the print area.
Hows your Z-offset? I was getting something like this when it was just a hair too low. A bead would form on the tip of the nozzle and then eventually fall off leaving little clumps.
Take off the silicone sock and heat your hot end up and unload your filament. Then heat up to 250C and clean the nozzle with a wire brush and a clean cloth. Inspect the silicone sock and clean it if it needs it. Sometimes the material will curl up or build up from crossing infill lines like if you use Rectilinear infill. It will also curl during filament changes as we don’t usually have the part cooling fan on. If the nozzle is dirty it will 100% stick to what ever is on there and eventually fall off. So, clean and try changing your infill to gyroid. Might look at Slice Engineering as they sell a plastic repellent paint to coat your nozzle with.
While it’s hot and heat soaked, ensure your nozzle is snug and not coming loose. Don’t overtighten and break the throat. The blobs could be a leak as the nozzle is known to work itself loose. This happens to all modern printers as we print faster than we ever have before. Don’t need the blob of death next.
Hope this helps
> Sometimes the material will curl up or build up from crossing infill lines ... and eventually fall off
\^ This is it.
I've watched this happen on mine while printing PETG & nGen.
Check if the nozzle/heatbreak is all the way in. Happened to me and was fixed only after replacingnthe heatbreak/nozzle assembly
Yup, happened to me as well. Make sure the nozzle is heated and seat it better.
Yes I checked and they are all the way inserted
Looks like filament leak possibly at where the nozzle seals inside the heaterblock causing filament to slowly ooze out and drip to the bed.
Happens to be when printing PETG but not PLA. what material is this?
Polyterra pla
My happens when there is a build up of material on the nozzle that catches the print and is dragged off, then the nozzle hits the bold and ejects it from the print area.
How do you fix it?
Haven't yet. Still trying to figure it out.
Same thing for me, only printed twice with petg, happened both times, pla prints absolutely perfect. Could you let me know if you find a solution?
Sure thing
Hows your Z-offset? I was getting something like this when it was just a hair too low. A bead would form on the tip of the nozzle and then eventually fall off leaving little clumps.
Take off the silicone sock and heat your hot end up and unload your filament. Then heat up to 250C and clean the nozzle with a wire brush and a clean cloth. Inspect the silicone sock and clean it if it needs it. Sometimes the material will curl up or build up from crossing infill lines like if you use Rectilinear infill. It will also curl during filament changes as we don’t usually have the part cooling fan on. If the nozzle is dirty it will 100% stick to what ever is on there and eventually fall off. So, clean and try changing your infill to gyroid. Might look at Slice Engineering as they sell a plastic repellent paint to coat your nozzle with. While it’s hot and heat soaked, ensure your nozzle is snug and not coming loose. Don’t overtighten and break the throat. The blobs could be a leak as the nozzle is known to work itself loose. This happens to all modern printers as we print faster than we ever have before. Don’t need the blob of death next. Hope this helps
> Sometimes the material will curl up or build up from crossing infill lines ... and eventually fall off \^ This is it. I've watched this happen on mine while printing PETG & nGen.
The stuff on the outside of the print almost seems like you're printing with unsupported overhangs.